They are wearing them so they don’t spit into a patient when they talk. And they don’t wear the same one for days and weeks at a time. And they also never, ever, touch their face and mask.
One of the first lessons new chemhead troopers learn is you never touch anywhere on your body once in.protective gear unless you are in the process of decontamination and removing your gear. We used to dye karo syrup bright blue then smear it all over the outside of the Bl4 level.suits these are the plastic ones with SCBA tanks inside them. The troopers task was to evac and decon himself from inside the suit without a.single drop of blue sticky making contact with the bare skin of their body. The success rate for the first time us under 5% I personally failed.twice before getting it right. One more November Golf and it would have been a recycle to the beginning of the program all 12 weeks of it. So to think that the avg person can keep themselves uncontaminated in a challenged environment is crazy. If you are in close contact with an infected you are covered with virus and it is a good possibility that the necessary 10 to 50 virons needed for inoculation will enter a mucus membrane via the eyes, nose, mouth, and ears, and genital tissues people forget the inner ear drum is also a mucous membrane. COVID is also a known formite bug so transfer hours after the fact from surfaces membranes is not only possible but likely. These facts alone explain why this bug has an R0 in the wild pf 4+ and spreads like wild fire.
As it has been shown that masks lower your oxygen intake I worry about a doc cutting on me when wearing a mask.